OPTICAL SPECIFICATIONS |
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| System Type | Mangin mirror Cassegrain Catadioptric with internal lens focusing from infinity to 600 feet (182m) |
| Aperture: | 12.625 inches (321mm) |
| Effective Focal Length: | 500mm (20in.) or 1000mm (40in.) |
| Relative Aperture: | F/1.64 (T2) or F/3.3 (T4) |
| Resolution: | 300 LP/mm at 589nm |
| Useable Format: | 16mm Dia. |
| Field of View Across 16mm: | 1.84 degrees at 500mm E.F.L. 0.91 degrees at 1000mm E.F.L. |
| Back Focus: | 0.690 in. |
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MECHANICAL SPECIFICATIONS |
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| Length of Barrel: | 12.5 inches (31.75cm) |
| Diameter of Barrel: | 13.375 inches (34cm) |
| Overall Length to Back Focus: | 18.8 inches (47.75cm) |
| Overall Height of Unit: | 14.75 inches (37.5cm) |
| Center line Height: | 8.0 inches (20.3cm) |
| Materials Used in Construction: | Aluminum alloy with stainless steel fasteners |
| Weight of Unit Less Camera: | 56 lb. (25.45Kg) |
| Type of Camera Support: | Adjustable platform with special slip-in "C" mount adapter. |
OPTIONAL FEATURES |
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| Motorized Focal Length Change | Custom Mounting Bases for Lens and Camera |
| Remotely Operated Focus | Special Mounting Configurations |
| Remotely Operated ND Filter Wheel Assy. | |